1: "Requiem for a Dream" will leave you shaken.

2: "A Clockwork Orange" challenges societal norms.

3: "Antichrist" is not for the faint of heart.

4: "Funny Games" is a disturbing thriller.

5: "Hereditary" will haunt your dreams.

6: "Black Swan" is a psychological masterpiece.

7: "Irreversible" is graphic and unflinching.

8: "Martyrs" pushes the boundaries of horror.

9: "Salo, or the 120 Days of Sodom" is truly unsettling.